Brennan, Robert. "The intelectual knowledge of man". In Thomistic Psychology: A Philosophic Analysis of the Nature of Man.
https://www.dropbox.com/s/wv4kxxhwfomnqcf/O%20Conhecimento%20Intelectual%20do%20Homem.pdf?dl=0
https://www.dropbox.com/s/wv4kxxhwfomnqcf/O%20Conhecimento%20Intelectual%20do%20Homem.pdf?dl=0